Aims.The detection of magnetic chemically peculiar (CP2) stars in open
clusters of the Milky Way can be used to study the influence of different galactic
environments on the (non-)presence of peculiarities, which has to be taken into
account in stellar evolution models. Furthermore it is still unknown if the
CP2 phenomenon evolves, i.e. does the strength of the peculiarity
feature at 5200 Å increase or decrease with age.

Methods.We have observed eight young to intermediate age open
clusters in the photometric system. This intermediate
band photometric system
samples the depth of the 5200 Å flux depression by comparing the flux at the center
with the adjacent regions having bandwidths of 110 Å to 230 Å.
The photometric system is most suitable to detect CP2 stars with high
efficiency, but is also capable of detecting a small percentage of
non-magnetic CP objects. Also, the groups of (metal-weak) λ Bootis,
as well as classical Be/shell stars, can be successfully investigated.
This photometric system allows one to determine the age, reddening and
distance modulus by fitting isochrones.

Results.Among the presented sample of eight galactic clusters, we have detected
twenty three CP2, eight Be/Ae and eight metal-weak stars. Another six objects
show a peculiar behaviour which is most probably due to a non-membership,
variability or duplicity. Fitting isochrones to photometry yields
estimates of the age, reddening and distance that are in excellent agreement
with published values.

Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.

Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.